On my 64bit aptosid 3.1-5.slh.3-aptosid-686, I get black screens reading "KERNEL BUG" every day.
/var/log/messages is quoted below, it doesn't speak of a kernel bug any more.

This happens only when I run video-processing processes, namely a script that sequencially runs mplex, spumux, dvadauthor and HandBrakeCLI. The system hangs randomly in either process. This once also happened half a second after script-start, so I don't think this a temperature problem. The same happens when I start the PC with the previously installed kernel 3.0-6.slh.3-aptosid-686.

When I start with the older kernel 2.6.39-3.slh.1-aptosid-686, the script runs smoothly until I attempt an additional action like logging in from a remote pc via nfs and opening a directory. Then the system just freezes without giving the black screen, but /var/log/messages looks similar.

Below, I give excerpts from /var/log/messages showing different events with different kernels, which are stated in the messages.

The second warning is of no use, given that it is just a follow up to a previous warning and doesn't allow to tell anything on its own (as the kernel has already gone south before).

That said, while all warning are roughly vfs related, they still point at multiple different code areas, which raises the suspicion of hardware problems. I would do a filesystem check of all involved filesystems first and then keep a close look on potential hardware problems - a RAM check (running memtest86+ over night must not produce any errors) is also recommended.

DeepDayze

Post subject: RE: Kernel Bug (?) Posted: 23.12.2011, 23:02

Joined: 2010-09-11
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Don't vfs issues indicate possible disk or RAM problems, as those should indeed be the first places to check for hardware faults